Answer:
option 3- 5 square root 2
Step-by-step explanation:

Answer:
B. 4x ≤ 320
Step-by-step explanation:
Not sure how to explain my thinking. However, 4x must be smaller than 320 because she cannot spend more than that.
Answer: 
<u>Step-by-step explanation:</u>
Since the expressions have the same denominator, we simply need to add the numerators.

Step-by-step explanation:
3x+1 = 5x-1
3x+2= 5x
2x= 2
x= 1